Video: Ad pokes fun at Jim Harbaugh's 'dad pants'

The often-dour 49ers head coach appears is a new ad – albeit in a non-speaking role – for Dockers in which his wife Sarah solemnly talks about "a serious condition affecting countless men in our country" – "dad pants".

Check it out in the YouTube video above.

Harbaugh is a natural fit to endorse Dockers. He's almost never seen without khakis and a black team-issued sweatshirt, which is sometimes his preferred outfit when he's not on the sidelines. Dockers is owned by San Francisco-based Levi Strauss & Co., which owns the naming rights to the 49ers' new stadium.